US11258119B2 - Battery box - Google Patents

Battery box Download PDF

Info

Publication number
US11258119B2
US11258119B2 US16/719,663 US201916719663A US11258119B2 US 11258119 B2 US11258119 B2 US 11258119B2 US 201916719663 A US201916719663 A US 201916719663A US 11258119 B2 US11258119 B2 US 11258119B2
Authority
US
United States
Prior art keywords
heat exchange
exchange plate
circumferential edge
pad
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US16/719,663
Other versions
US20200212523A1 (en
Inventor
Heng Wang
Jinqing JI
Wenhui Zhang
Mu Qian
Yanhuo XIANG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Hong Kong Ltd
Original Assignee
Contemporary Amperex Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED reassignment CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JI, Jinqing, QIAN, Mu, WANG, HENG, XIANG, YANHUO, ZHANG, WENHUI
Publication of US20200212523A1 publication Critical patent/US20200212523A1/en
Application granted granted Critical
Publication of US11258119B2 publication Critical patent/US11258119B2/en
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED reassignment CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present disclosure relates to the field of battery, and particularly relates to a battery box.
  • a battery box comprises a lower frame body and a heat exchange plate, the lower frame body and the heat exchange plate form an accommodating space for accommodating a battery module, the battery module comprises a plurality of arranged batteries, the battery module is supported on the heat exchange plate, the heat exchange plate supports the batteries and exchanges heat with the batteries.
  • the battery generally needs to maintain at a constant temperature range to ensure the stability and constancy of the operating temperature of the battery.
  • an object of the present disclosure is to provide a battery box, which blocks the heat transfer in an upward direction between the lower frame body and an upper surface of a circumferential edge of the heat exchange plate, thereby improving the heat insulating effect to the heat exchange plate, and in turn improving the stability and constancy of the operating temperature of the battery.
  • the present disclosure provides a battery box, which comprises: a lower frame body closed in a circumferential direction and opened in an up-down direction; and a heat exchange assembly fixed below the lower frame body at a circumferential edge of the heat exchange assembly, the heat exchange assembly and the lower frame body form an accommodating space which is opened upwardly and used to accommodate a battery, the heat exchange assembly comprises a heat exchange plate, a heat insulating pad, a temperature preserving pad and a protective plate; wherein the heat exchange plate is provided with a flow passage therein for a heat exchange medium to flow, a portion of the heat exchange plate provided with the flow passage is used to support the battery and exchange heat with the battery; the heat insulating pad comprises a first part, the first part has a ring shape, the first part surrounds an entire circumferential edge of the heat exchange plate outside the flow passage and is provided above an upper surface of the circumferential edge of the heat exchange plate, the first part of the heat insulating pad and the circumferential edge of the heat exchange
  • the protective plate comprises a peripheral portion which is ring-shaped and a recessed portion which is recessed downwardly from an inner side of the peripheral portion, the temperature preserving pad is received in the recessed portion; the first part of the heat insulating pad, the circumferential edge of the heat exchange plate and the peripheral portion of the protective plate are stacked in the up-down direction; an outer side surface of the first part of the heat insulating pad, an outer side surface of the circumferential edge of the heat exchange plate and an outer side surface of the peripheral portion of the protective plate are flush with each other.
  • the protective plate comprises a peripheral portion which is ring-shaped and a recessed portion which recessed downwardly from an inner side of the peripheral portion, the temperature preserving pad is received in the recessed portion; an outer side surface of the peripheral portion of the protective plate protrudes outwardly with respect to an outer side surface of the circumferential edge of the heat exchange plate; the heat insulating pad further comprises a second part, the second part bends downwardly from the first part and extends to surround the outer side surface of the circumferential edge of the heat exchange plate from outside.
  • the heat insulating pad further comprises a third part; the third part bends inwardly from the second part and extends to below a lower surface of the circumferential edge of the heat exchange plate, the third part is sandwiched by an upper surface of the peripheral portion of the protective plate and the lower surface of the circumferential edge of the heat exchange plate in the up-down direction.
  • the heat insulating pad further comprises a third part, the third part bends inwardly from the second part, extends to below a lower surface of the circumferential edge of the heat exchange plate and further extends into the recessed portion of the protective plate;
  • the temperature preserving pad comprises a main body and a protruding portion which is ring-shaped and protrudes upwardly from the main body, and the protruding portion and a portion of the third part which is located in the recessed portion of the protective plate abut against each other in the up-down direction.
  • the protective plate comprises a peripheral portion which is ring-shaped and a recessed portion which is recessed downwardly from an inner side of the peripheral portion;
  • the temperature preserving pad comprises a main body and an extending portion, the main body is received in the recessed portion, the extending portion extends outwardly from the main body onto an entire lower surface of the circumferential edge of the heat exchange plate so that the extending portion is sandwiched between an upper surface of the peripheral portion of the protective plate and the lower surface of the circumferential edge of the heat exchange plate.
  • the protective plate comprises a peripheral portion which is ring-shaped and a recessed portion which recessed downwardly from an inner side of the peripheral portion; an outer side surface of the peripheral portion of the protective plate protrudes outwardly with respect to an outer side surface of the circumferential edge of the heat exchange plate;
  • the temperature preserving pad comprises a main body, an extending portion and a bending portion, the main body is received in the recessed portion, the extending portion extends outwardly from the main body onto a lower surface of the circumferential edge of the heat exchange plate so that the extending portion is sandwiched between an upper surface of the peripheral portion of the protective plate and the lower surface of the circumferential edge of the heat exchange plate, the bending portion bends upwardly from the extending portion and extends to surround the outer side surface of the circumferential edge of the heat exchange plate.
  • the temperature preserving pad further comprises a folding-back portion, the folding-back portion bends inwardly from the bending portion and extends to the upper surface of the circumferential edge of the heat exchange plate.
  • the folding-back portion of the temperature preserving pad is sandwiched between the first part of the heat insulating pad and the upper surface of the circumferential edge of the heat exchange plate.
  • the first part of the heat insulating pad is sandwiched between the folding-back portion of the temperature preserving pad and the upper surface of the circumferential edge of the heat exchange plate.
  • the temperature preserving pad and the heat insulating pad are integrally formed.
  • the present disclosure has the following beneficial effects: by the arrangement of the first portion of the heat insulating pad, the heat transfer in the upward direction between the lower frame body and the upper surface of the circumferential edge of the heat exchange plate is blocked, which improves the heat insulating effect to the heat exchange plate, and in turn improves the stability and constancy of the operating temperature of the battery.
  • FIG. 1 is an assembled perspective view of a first embodiment of a battery box according to the present disclosure.
  • FIG. 2 is an assembled perspective view of a heat exchange assembly of the battery box of FIG. 1 .
  • FIG. 3 is an exploded view of FIG. 2 .
  • FIG. 4 is a top view of FIG. 2 .
  • FIG. 5 is a partial cross-section view of FIG. 4 .
  • FIG. 6 is an enlarged view of FIG. 5 indicated by a circle.
  • FIG. 7 is an enlarged view of a second embodiment of the battery box according to the present disclosure corresponding to FIG. 6 .
  • FIG. 8 is an enlarged view of a third embodiment of the battery box according to the present disclosure corresponding to FIG. 7 .
  • FIG. 9 is an enlarged view of a fourth embodiment of the battery box according to the present disclosure corresponding to FIG. 7 .
  • FIG. 10 is an enlarged view of a fifth embodiment of the battery box according to the present disclosure corresponding to FIG. 6 .
  • FIG. 11 is an enlarged view of a sixth embodiment of the battery box according to the present disclosure corresponding to FIG. 10 .
  • FIG. 12 is an enlarged view of a seventh embodiment of the battery box according to the present disclosure corresponding to FIG. 11 .
  • FIG. 13 is an enlarged view of an eighth embodiment of the battery box according to the present disclosure corresponding to FIG. 12 .
  • FIG. 14 is an enlarged view of a ninth embodiment of the battery box according to the present disclosure corresponding to FIG. 9 and FIG. 11 .
  • FIG. 1 is an assembled perspective view of a first embodiment of a battery box according to the present disclosure.
  • FIG. 2 is an assembled perspective view of a heat exchange assembly of the battery box of FIG. 1 .
  • FIG. 3 is an exploded view of FIG. 2 .
  • FIG. 4 is a top view of FIG. 2 .
  • FIG. 5 is a partial cross-section view of FIG. 4 .
  • FIG. 6 is an enlarged view of FIG. 5 indicated by a circle.
  • FIG. 7 to FIG. 14 are enlarged views of second to ninth embodiments of the battery box according to the present disclosure.
  • a battery box according to the present disclosure comprises a lower frame body 1 and a heat exchange assembly 2 .
  • a lower frame body 1 is closed in a circumferential direction and opened in an up-down direction D.
  • the lower frame body 1 can be made of metal, such as aluminum alloy.
  • the lower frame body 1 can be a die casting member or an extrusion profile.
  • the heat exchange assembly 2 is fixed below the lower frame body 1 at a circumferential edge of the heat exchange assembly 2 , the heat exchange assembly 2 and the lower frame body 1 form an accommodating space which is opened upwardly and used to accommodate the battery B.
  • the heat exchange assembly 2 comprises a heat exchange plate 21 , a heat insulating pad 22 , a temperature preserving pad 23 and a protective plate 24 .
  • the heat exchange assembly 2 further comprises a fixing member 25 .
  • the battery B is generally arranged in the form of a battery module, that is, a plurality of batteries B are arranged together to form a unit module.
  • the battery B may generally comprise a case and an electrode assembly and an electrolyte which are received in the case.
  • the electrode assembly comprises a positive electrode plate, a negative electrode plate and a separator.
  • the battery B may be a can-type (or rigid case) battery, and accordingly, the case comprises a cap assembly and an outer case assembled with the cap assembly; or the battery B may be a pouch-type (or flexible case) battery, the case is made of a packaging film (such as an aluminum plastic film).
  • the heat exchange plate 21 is provided with a flow passage F therein for a heat exchange medium to flow, a portion of the heat exchange plate 21 provided with the flow passage F is used to support the battery B and exchange heat with the battery B.
  • the heat exchange plate 21 comprises an upper plate 211 and a lower plate 212 .
  • the upper plate 211 and the lower plate 212 enclose to form the flow passage F, for example by stamping the upper plate 211 and/or the lower plate 212 .
  • the heat exchange plate 21 is made of a material having high thermal conductivity, preferably a metal material, and more preferably an aluminum alloy material.
  • the heat insulating pad 22 comprises a first part 221 having a ring shape, and the first part 221 surrounds an entire circumferential edge of the heat exchange plate 21 outside the flow passage F and is provided above an upper surface U 211 of the circumferential edge of the heat exchange plate 21 , the first part 221 of the heat insulating pad 22 and the circumferential edge of the heat exchange plate 21 are stacked in the up-down direction D, the first part 221 of the heat insulating pad 22 is sandwiched between a lower surface of the lower frame body 1 and the upper surface U 211 of the circumferential edge of the heat exchange plate 21 .
  • a material of the heat insulating pad 22 may be a composite material, such as an epoxy resin pad, of course, it is not limited thereto, and any suitable pad having high heat insulating properties may be used.
  • At least a portion of the temperature preserving pad 23 is provided below the heat exchange plate 21 , and the temperature preserving pad 23 at least covers the portion of the heat exchange plate 21 in which the flow passage F is provided. Therefore, at least the heat transfer of the heat exchange plate 21 in a downward direction is blocked, thereby preserving temperature of the battery B.
  • a material of the temperature preserving pad 23 may be a heat insulating cotton, a foam or the like.
  • the protective plate 24 supports the temperature preserving pad 23 and the heat exchange plate 21 from below.
  • a material of the protective plate 24 is preferably a material with strong impact resistance, such as aluminum alloy, stainless steel, high-strength steel, hot-dip (DP) galvanized bidirectional high-strength alloy steel, etc. Therefore, under the impact of an external force, the protective plate 24 prevents the heat exchange plate 21 from failure due to damage by the external force.
  • the heat insulating pad 22 can be configured in a variety of forms, which are specifically described below.
  • the protective plate 24 comprises a peripheral portion 241 which is ring-shaped and a recessed portion 242 which is recessed downwardly from an inner side of the peripheral portion 241 , the temperature preserving pad 23 is received in the recessed portion 242 ; the first part 221 of the heat insulating pad 22 , the circumferential edge of the heat exchange plate 21 and the peripheral portion 241 of the protective plate 24 are stacked in the up-down direction D; an outer side surface S 221 of the first part 221 of the heat insulating pad 22 , an outer side surface S 211 of the circumferential edge of the heat exchange plate 21 and an outer side surface S 241 of the peripheral portion 241 of the protective plate 24 are flush with each other.
  • the flush arrangement helps to improve the aesthetics of the appearance of the battery box.
  • the protective plate 24 comprises a peripheral portion 241 which is ring-shaped and a recessed portion 242 which recessed downwardly from an inner side of the peripheral portion 241 , the temperature preserving pad 23 is received in the recessed portion 242 ; an outer side surface S 241 of the peripheral portion 241 of the protective plate 24 protrudes outwardly with respect to an outer side surface S 211 of the circumferential edge of the heat exchange plate 21 ; the heat insulating pad 22 further comprises a second part 222 , the second part 222 bends downwardly from the first part 221 and extends to surround the outer side surface S 211 of the circumferential edge of the heat exchange plate 21 from outside.
  • heat insulating from outside (i.e., along the circumferential direction and the radial direction) the outer side surface S 211 of the circumferential edge of the heat exchange plate 21 is performed by the second part 222 of the heat insulating pad 22 , thereby reinforcing the heat insulating on the basis of the first portion 221 , in turn improving the heat insulating effect to the heat exchange plate 21 , and improving the stability and constancy of the operating temperature of the battery B.
  • the outer side surface S 211 is also protected against damage caused by direct impact on the outer side surface S 211 .
  • the heat insulating pad 22 further comprises a third part 223 , the third part 223 bends inwardly from the second part 222 and extends to below a lower surface L 211 of the circumferential edge of the heat exchange plate 21 , the third part 223 is sandwiched by an upper surface U 241 of the peripheral portion 241 of the protective plate 24 and the lower surface L 211 of the circumferential edge of the heat exchange plate 21 in the up-down direction D.
  • the second part 222 can not only strengthen the fixing of the second part 222 , but also insulate heat from below the lower surface L 211 of the circumferential edge of the heat exchange plate 21 , so that the third part 223 , the first part 221 and the second part 222 together achieve multi-directional heat insulation in the upward, downward, circumferential and radial directions, which further improves the temperature control effect of the battery box, and improves the stability and constancy of the operating temperature of the battery B. Furthermore, the outer side surface S 211 of the circumferential edge of the heat exchange plate 21 is wrapped by the first part 221 , the second part 222 and the third part 223 of the heat insulating pad 22 , which improves the buffer effect of the circumferential edge of the heat exchange plate 21 .
  • the heat insulating pad 22 further comprises a third part 223 , the third part 223 bends inwardly from the second part 222 , extends to below a lower surface L 211 of the circumferential edge of the heat exchange plate 21 and further extends into the recessed portion 242 of the protective plate 24 , the temperature preserving pad 23 comprises a main body 230 and a protruding portion 231 which is ring-shaped and protrudes upwardly from the main body 230 , and the protruding portion 231 and a portion of the third part 223 which is located in the recessed portion 242 of the protective plate 24 abut against each other in the up-down direction D.
  • the fourth embodiment shown in FIG. 9 is similar to the third embodiment shown in FIG. 8 , but differs in the extension extent of the heat insulating pad 22 and the protruding portion 231 of the temperature preserving pad 23 .
  • the protruding portion 231 and the portion of the third part 223 of the heat insulating pad 22 which is located in the recessed portion 242 of the protective plate 24 abut against each other in the up-down direction D, the heat insulating pad 22 and the temperature preserving pad 23 are connected together, so that the first part 221 , the second part 222 , the third part 223 and the temperature preserving pad 23 together achieve multi-directional heat insulation to the entire heat exchange plate 21 in the upward, downward, circumferential and radial directions (not only achieve the heat insulation from the lower frame body 1 but also from the protective plate 24 ), and further improve the temperature control effect of the battery box, and improve the stability and constancy of the operating temperature of the battery B.
  • the temperature preserving pad 23 can be configured in a variety of forms, which are specifically described below.
  • the protective plate 24 comprises a peripheral portion 241 which is ring-shaped and a recessed portion 242 which is recessed downwardly from an inner side of the peripheral portion 241 ;
  • the temperature preserving pad 23 comprises a main body 230 and an extending portion 232 , the main body 230 is received in the recessed portion 242 , the extending portion 232 extends outwardly from the main body 230 onto an entire lower surface L 211 of the circumferential edge of the heat exchange plate 21 so that the extending portion 232 is sandwiched between an upper surface U 241 of the peripheral portion 241 of the protective plate 24 and the lower surface L 211 of the circumferential edge of the heat exchange plate 21 .
  • the extending portion 232 can perform temperature preservation from below the lower surface L 211 of the circumferential edge of the heat exchange plate 21 , so that the extending portion 232 and the first part 221 of the heat insulating pad 22 together realize bidirectional heat insulation in the up-down direction D, which improves the temperature control effect of the battery box, and improves the stability and constancy of the operating temperature of the battery B.
  • the protective plate 24 comprises a peripheral portion 241 which is ring-shaped and a recessed portion 242 which recessed downwardly from an inner side of the peripheral portion 241 , an outer side surface S 241 of the peripheral portion 241 of the protective plate 24 protrudes outwardly with respect to an outer side surface S 211 of the circumferential edge of the heat exchange plate 21 ;
  • the temperature preserving pad 23 comprises a main body 230 , an extending portion 232 and a bending portion 233 , the main body 230 is received in the recessed portion 242 , the extending portion 232 extends outwardly from the main body 230 onto the lower surface L 211 of the circumferential edge of the heat exchange plate 21 so that the extending portion 232 is sandwiched between an upper surface U 241 of the peripheral portion 241 of the protective plate 24 and the lower surface L 211 of the circumferential edge of the heat exchange plate 21 , the bending portion 233 bends upwardly from the extending portion 232 and extends
  • the sixth embodiment shown in FIG. 11 can achieve an effect similar to that of the third embodiment shown in FIG. 8 , that is, the bending portion 233 of the temperature preserving pad 23 insulates heat from outside (i.e., the circumferential direction and the radial direction) the outer side surface S 211 of the circumferential edge of the heat exchange plate 21 , so that the extending portion 232 and the bending portion 233 of the temperature preserving pad 23 and the first part 221 of the heat insulating pad 22 together realize multi-directional heat insulation in the upward, downward, circumferential and radial directions, thereby further improving the temperature control effect of the battery box, and improving the stability and constancy of the operating temperature of battery B. Furthermore, the sixth embodiment shown in FIG.
  • the main body 230 , the extending portion 232 and the bending portion 233 (in other words, the entire thermal insulation pad 23 ) of the temperature preserving pad 23 and the first part 221 of the heat insulating pad 22 together realize multi-directional heat insulation to the entire heat exchange plate 21 in the upward, downward, circumferential and radial directions (realize not only the heat insulation between the heat exchange plate 21 and the lower frame body 1 , but also temperature preservation (that is heat insulation) between the heat exchange plate 21 and the protective plate 24 ), and further improve the temperature control effect of the battery box, improve the stability and constancy of the operating temperature of the battery B.
  • the temperature preserving pad 23 further comprises a folding-back portion 234 , the folding-back portion 234 bends inwardly from the bending portion 233 and extends to the upper surface U 211 of the circumferential edge of the heat exchange plate 21 .
  • the folding-back portion 234 facilitates the fixing of the bending portion 233 , while forming the double-layer heat insulation over the upper surface U 211 of the circumferential edge of the heat exchange plate 21 , thereby reinforcing the heat insulating effect between the heat exchange plate 21 and the lower frame 1 in the upward direction.
  • a positional relationship of the folding-back portion 234 and the first part 221 of the heat insulating pad 22 may be as shown in FIG. 12 , that is, the folding-back portion 234 of the temperature preserving pad 23 is sandwiched between the first part 221 of the heat insulating pad 22 and the upper surface U 211 of the circumferential edge of the heat exchange plate 21 .
  • a positional relationship of the folding-back portion 234 and the first part 221 of the heat insulating pad 22 may also be as shown in FIG. 13 .
  • the first part 221 of the heat insulating pad 22 is sandwiched between the folding-back portion 234 of the temperature preserving pad 23 and the upper surface U 211 of the circumferential edge of the heat exchange plate 21 .
  • the temperature preserving pad 23 and the heat insulating pad 22 are integrally formed.
  • the temperature preserving pad 23 and the heat insulating pad 22 can be made of the same material, thereby saving manufacturing cost.
  • the first part 221 of the heat insulating pad 22 is formed by the folding-back portion 234 of the temperature preserving pad 23 , and vice versa, that is, other portions, such as the extending portion 232 and the bending portion 233 .
  • the temperature preserving pad 23 and the heat insulating pad 22 are formed separately.
  • a fixing member 25 is used to fix the heat exchange plate 21 , the heat insulating pad 22 , the temperature preserving pad 23 and the protective plate 24 to the lower frame body 1 .
  • the fixing member 25 can take any suitable form, such as a rivet or a combination of bolt and nut.
  • the material of the fixing member 25 is preferably made of a material having low thermal conductivity, such as a plastic member.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

The present disclosure provides a battery box which comprises a lower frame body and a heat exchange assembly, the heat exchange assembly comprises a heat exchange plate, a heat insulating pad, a temperature preserving pad and a protective plate. The heat exchange plate is provided with a flow passage therein; a first part of the heat insulating pad and the circumferential edge of the heat exchange plate are stacked in the up-down direction, the first part of the heat insulating pad is sandwiched between a lower surface of the lower frame body and the upper surface of the circumferential edge of the heat exchange plate; at least a portion of the temperature preserving pad is provided below the heat exchange plate. Therefore, at least the heat transfer in the upward direction between the lower frame body and the circumferential edge of the heat exchange plate is blocked.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS
The present application claims priority to Chinese patent application No. CN201822246290.4, filed on Dec. 29, 2018, which is incorporated herein by reference in its entirety.
TECHNICAL FIELD
The present disclosure relates to the field of battery, and particularly relates to a battery box.
BACKGROUND
In the field of battery, a battery box comprises a lower frame body and a heat exchange plate, the lower frame body and the heat exchange plate form an accommodating space for accommodating a battery module, the battery module comprises a plurality of arranged batteries, the battery module is supported on the heat exchange plate, the heat exchange plate supports the batteries and exchanges heat with the batteries.
The battery generally needs to maintain at a constant temperature range to ensure the stability and constancy of the operating temperature of the battery.
However, because the heat exchange plate is fixed to the lower frame body, there is heat transfer between the heat exchange plate and the lower frame body, which will affect the heat exchange effect of the heat exchange plate and the stability and constancy of the operating temperature of the battery.
SUMMARY
In view of the problem existing in the background, an object of the present disclosure is to provide a battery box, which blocks the heat transfer in an upward direction between the lower frame body and an upper surface of a circumferential edge of the heat exchange plate, thereby improving the heat insulating effect to the heat exchange plate, and in turn improving the stability and constancy of the operating temperature of the battery.
In order to achieve the above object, the present disclosure provides a battery box, which comprises: a lower frame body closed in a circumferential direction and opened in an up-down direction; and a heat exchange assembly fixed below the lower frame body at a circumferential edge of the heat exchange assembly, the heat exchange assembly and the lower frame body form an accommodating space which is opened upwardly and used to accommodate a battery, the heat exchange assembly comprises a heat exchange plate, a heat insulating pad, a temperature preserving pad and a protective plate; wherein the heat exchange plate is provided with a flow passage therein for a heat exchange medium to flow, a portion of the heat exchange plate provided with the flow passage is used to support the battery and exchange heat with the battery; the heat insulating pad comprises a first part, the first part has a ring shape, the first part surrounds an entire circumferential edge of the heat exchange plate outside the flow passage and is provided above an upper surface of the circumferential edge of the heat exchange plate, the first part of the heat insulating pad and the circumferential edge of the heat exchange plate are stacked in the up-down direction, the first part of the heat insulating pad is sandwiched between a lower surface of the lower frame body and the upper surface of the circumferential edge of the heat exchange plate; at least a portion of the temperature preserving pad is provided below the heat exchange plate, and the temperature preserving pad at least covers the portion of the heat exchange plate in which the flow passage is provided; the protective plate supports the temperature preserving pad and the heat exchange plate from below.
In an embodiment, the protective plate comprises a peripheral portion which is ring-shaped and a recessed portion which is recessed downwardly from an inner side of the peripheral portion, the temperature preserving pad is received in the recessed portion; the first part of the heat insulating pad, the circumferential edge of the heat exchange plate and the peripheral portion of the protective plate are stacked in the up-down direction; an outer side surface of the first part of the heat insulating pad, an outer side surface of the circumferential edge of the heat exchange plate and an outer side surface of the peripheral portion of the protective plate are flush with each other.
In an embodiment, the protective plate comprises a peripheral portion which is ring-shaped and a recessed portion which recessed downwardly from an inner side of the peripheral portion, the temperature preserving pad is received in the recessed portion; an outer side surface of the peripheral portion of the protective plate protrudes outwardly with respect to an outer side surface of the circumferential edge of the heat exchange plate; the heat insulating pad further comprises a second part, the second part bends downwardly from the first part and extends to surround the outer side surface of the circumferential edge of the heat exchange plate from outside.
In an embodiment, the heat insulating pad further comprises a third part; the third part bends inwardly from the second part and extends to below a lower surface of the circumferential edge of the heat exchange plate, the third part is sandwiched by an upper surface of the peripheral portion of the protective plate and the lower surface of the circumferential edge of the heat exchange plate in the up-down direction.
In an embodiment, the heat insulating pad further comprises a third part, the third part bends inwardly from the second part, extends to below a lower surface of the circumferential edge of the heat exchange plate and further extends into the recessed portion of the protective plate; the temperature preserving pad comprises a main body and a protruding portion which is ring-shaped and protrudes upwardly from the main body, and the protruding portion and a portion of the third part which is located in the recessed portion of the protective plate abut against each other in the up-down direction.
In an embodiment, the protective plate comprises a peripheral portion which is ring-shaped and a recessed portion which is recessed downwardly from an inner side of the peripheral portion; the temperature preserving pad comprises a main body and an extending portion, the main body is received in the recessed portion, the extending portion extends outwardly from the main body onto an entire lower surface of the circumferential edge of the heat exchange plate so that the extending portion is sandwiched between an upper surface of the peripheral portion of the protective plate and the lower surface of the circumferential edge of the heat exchange plate.
In an embodiment, the protective plate comprises a peripheral portion which is ring-shaped and a recessed portion which recessed downwardly from an inner side of the peripheral portion; an outer side surface of the peripheral portion of the protective plate protrudes outwardly with respect to an outer side surface of the circumferential edge of the heat exchange plate; the temperature preserving pad comprises a main body, an extending portion and a bending portion, the main body is received in the recessed portion, the extending portion extends outwardly from the main body onto a lower surface of the circumferential edge of the heat exchange plate so that the extending portion is sandwiched between an upper surface of the peripheral portion of the protective plate and the lower surface of the circumferential edge of the heat exchange plate, the bending portion bends upwardly from the extending portion and extends to surround the outer side surface of the circumferential edge of the heat exchange plate.
In an embodiment, the temperature preserving pad further comprises a folding-back portion, the folding-back portion bends inwardly from the bending portion and extends to the upper surface of the circumferential edge of the heat exchange plate.
In an embodiment, the folding-back portion of the temperature preserving pad is sandwiched between the first part of the heat insulating pad and the upper surface of the circumferential edge of the heat exchange plate.
In an embodiment, the first part of the heat insulating pad is sandwiched between the folding-back portion of the temperature preserving pad and the upper surface of the circumferential edge of the heat exchange plate.
In an embodiment, the temperature preserving pad and the heat insulating pad are integrally formed.
The present disclosure has the following beneficial effects: by the arrangement of the first portion of the heat insulating pad, the heat transfer in the upward direction between the lower frame body and the upper surface of the circumferential edge of the heat exchange plate is blocked, which improves the heat insulating effect to the heat exchange plate, and in turn improves the stability and constancy of the operating temperature of the battery.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an assembled perspective view of a first embodiment of a battery box according to the present disclosure.
FIG. 2 is an assembled perspective view of a heat exchange assembly of the battery box of FIG. 1.
FIG. 3 is an exploded view of FIG. 2.
FIG. 4 is a top view of FIG. 2.
FIG. 5 is a partial cross-section view of FIG. 4.
FIG. 6 is an enlarged view of FIG. 5 indicated by a circle.
FIG. 7 is an enlarged view of a second embodiment of the battery box according to the present disclosure corresponding to FIG. 6.
FIG. 8 is an enlarged view of a third embodiment of the battery box according to the present disclosure corresponding to FIG. 7.
FIG. 9 is an enlarged view of a fourth embodiment of the battery box according to the present disclosure corresponding to FIG. 7.
FIG. 10 is an enlarged view of a fifth embodiment of the battery box according to the present disclosure corresponding to FIG. 6.
FIG. 11 is an enlarged view of a sixth embodiment of the battery box according to the present disclosure corresponding to FIG. 10.
FIG. 12 is an enlarged view of a seventh embodiment of the battery box according to the present disclosure corresponding to FIG. 11.
FIG. 13 is an enlarged view of an eighth embodiment of the battery box according to the present disclosure corresponding to FIG. 12.
FIG. 14 is an enlarged view of a ninth embodiment of the battery box according to the present disclosure corresponding to FIG. 9 and FIG. 11.
Reference numerals in figures are represented as follows:
  • M battery module
  • B battery
  • D up-down direction
  • 1 lower frame body
  • 2 heat exchange assembly
  • 21 heat exchange plate
  • F flow passage
  • S211 outer side surface
  • U211 upper surface
  • L211 lower surface
  • 211 upper plate
  • 212 lower plate
  • 22 heat insulating pad
  • 221 first part
  • 222 second part
  • 223 third part
  • S221 outer side surface
  • 23 temperature preserving pad
  • 230 main body
  • 231 protruding portion
  • 232 extending portion
  • 233 bending portion
  • 234 folding-back portion
  • 24 protective plate
  • 241 peripheral portion
  • U241 upper surface
  • S241 outer side surface
  • 242 recessed portion
  • 25 fixing member
DETAILED DESCRIPTION
The appended figures illustrate embodiments of the present disclosure and it is to be understood that the disclosed embodiments are merely exemplary of the present disclosure, which may be embodied in various forms. Therefore, specific details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure.
Additionally, expressions indicating directions such as up, down, left, right, front, and back that are used to describe the operation and configuration of each part in embodiments are relative and not absolute, and are suitable when each part is in the orientation illustrated by the drawings; however, when the orientation of each part is changed, then these expressions should be interpreted to change corresponding to the changes in orientation.
FIG. 1 is an assembled perspective view of a first embodiment of a battery box according to the present disclosure. FIG. 2 is an assembled perspective view of a heat exchange assembly of the battery box of FIG. 1. FIG. 3 is an exploded view of FIG. 2. FIG. 4 is a top view of FIG. 2. FIG. 5 is a partial cross-section view of FIG. 4. FIG. 6 is an enlarged view of FIG. 5 indicated by a circle. FIG. 7 to FIG. 14 are enlarged views of second to ninth embodiments of the battery box according to the present disclosure.
A battery box according to the present disclosure comprises a lower frame body 1 and a heat exchange assembly 2.
A lower frame body 1 is closed in a circumferential direction and opened in an up-down direction D. The lower frame body 1 can be made of metal, such as aluminum alloy. The lower frame body 1 can be a die casting member or an extrusion profile.
The heat exchange assembly 2 is fixed below the lower frame body 1 at a circumferential edge of the heat exchange assembly 2, the heat exchange assembly 2 and the lower frame body 1 form an accommodating space which is opened upwardly and used to accommodate the battery B. The heat exchange assembly 2 comprises a heat exchange plate 21, a heat insulating pad 22, a temperature preserving pad 23 and a protective plate 24. The heat exchange assembly 2 further comprises a fixing member 25. The battery B is generally arranged in the form of a battery module, that is, a plurality of batteries B are arranged together to form a unit module. The battery B may generally comprise a case and an electrode assembly and an electrolyte which are received in the case. The electrode assembly comprises a positive electrode plate, a negative electrode plate and a separator. The battery B may be a can-type (or rigid case) battery, and accordingly, the case comprises a cap assembly and an outer case assembled with the cap assembly; or the battery B may be a pouch-type (or flexible case) battery, the case is made of a packaging film (such as an aluminum plastic film).
The heat exchange plate 21 is provided with a flow passage F therein for a heat exchange medium to flow, a portion of the heat exchange plate 21 provided with the flow passage F is used to support the battery B and exchange heat with the battery B. Specifically, the heat exchange plate 21 comprises an upper plate 211 and a lower plate 212. The upper plate 211 and the lower plate 212 enclose to form the flow passage F, for example by stamping the upper plate 211 and/or the lower plate 212. In order to improve the heat exchange effect, the heat exchange plate 21 is made of a material having high thermal conductivity, preferably a metal material, and more preferably an aluminum alloy material. The heat insulating pad 22 comprises a first part 221 having a ring shape, and the first part 221 surrounds an entire circumferential edge of the heat exchange plate 21 outside the flow passage F and is provided above an upper surface U211 of the circumferential edge of the heat exchange plate 21, the first part 221 of the heat insulating pad 22 and the circumferential edge of the heat exchange plate 21 are stacked in the up-down direction D, the first part 221 of the heat insulating pad 22 is sandwiched between a lower surface of the lower frame body 1 and the upper surface U211 of the circumferential edge of the heat exchange plate 21. Therefore, the heat transfer in the upward direction between the lower frame body 1 and the upper surface U211 of the circumferential edge of the heat exchange plate 21 is blocked, which improves the heat insulating effect to the heat exchange plate 21, and in turn improves the stability and constancy of the operating temperature of the battery B. A material of the heat insulating pad 22 may be a composite material, such as an epoxy resin pad, of course, it is not limited thereto, and any suitable pad having high heat insulating properties may be used.
At least a portion of the temperature preserving pad 23 is provided below the heat exchange plate 21, and the temperature preserving pad 23 at least covers the portion of the heat exchange plate 21 in which the flow passage F is provided. Therefore, at least the heat transfer of the heat exchange plate 21 in a downward direction is blocked, thereby preserving temperature of the battery B. A material of the temperature preserving pad 23 may be a heat insulating cotton, a foam or the like.
The protective plate 24 supports the temperature preserving pad 23 and the heat exchange plate 21 from below. A material of the protective plate 24 is preferably a material with strong impact resistance, such as aluminum alloy, stainless steel, high-strength steel, hot-dip (DP) galvanized bidirectional high-strength alloy steel, etc. Therefore, under the impact of an external force, the protective plate 24 prevents the heat exchange plate 21 from failure due to damage by the external force.
The heat insulating pad 22 can be configured in a variety of forms, which are specifically described below.
In the first embodiment shown in FIG. 6, the protective plate 24 comprises a peripheral portion 241 which is ring-shaped and a recessed portion 242 which is recessed downwardly from an inner side of the peripheral portion 241, the temperature preserving pad 23 is received in the recessed portion 242; the first part 221 of the heat insulating pad 22, the circumferential edge of the heat exchange plate 21 and the peripheral portion 241 of the protective plate 24 are stacked in the up-down direction D; an outer side surface S221 of the first part 221 of the heat insulating pad 22, an outer side surface S211 of the circumferential edge of the heat exchange plate 21 and an outer side surface S241 of the peripheral portion 241 of the protective plate 24 are flush with each other. The flush arrangement helps to improve the aesthetics of the appearance of the battery box.
In the second embodiment shown in FIG. 7, the protective plate 24 comprises a peripheral portion 241 which is ring-shaped and a recessed portion 242 which recessed downwardly from an inner side of the peripheral portion 241, the temperature preserving pad 23 is received in the recessed portion 242; an outer side surface S241 of the peripheral portion 241 of the protective plate 24 protrudes outwardly with respect to an outer side surface S211 of the circumferential edge of the heat exchange plate 21; the heat insulating pad 22 further comprises a second part 222, the second part 222 bends downwardly from the first part 221 and extends to surround the outer side surface S211 of the circumferential edge of the heat exchange plate 21 from outside. Therefore, heat insulating from outside (i.e., along the circumferential direction and the radial direction) the outer side surface S211 of the circumferential edge of the heat exchange plate 21 is performed by the second part 222 of the heat insulating pad 22, thereby reinforcing the heat insulating on the basis of the first portion 221, in turn improving the heat insulating effect to the heat exchange plate 21, and improving the stability and constancy of the operating temperature of the battery B. Furthermore, the outer side surface S211 is also protected against damage caused by direct impact on the outer side surface S211.
In the third embodiment shown in FIG. 8, on the basis of the second embodiment shown in FIG. 7, the heat insulating pad 22 further comprises a third part 223, the third part 223 bends inwardly from the second part 222 and extends to below a lower surface L211 of the circumferential edge of the heat exchange plate 21, the third part 223 is sandwiched by an upper surface U241 of the peripheral portion 241 of the protective plate 24 and the lower surface L211 of the circumferential edge of the heat exchange plate 21 in the up-down direction D. Therefore, it can not only strengthen the fixing of the second part 222, but also insulate heat from below the lower surface L211 of the circumferential edge of the heat exchange plate 21, so that the third part 223, the first part 221 and the second part 222 together achieve multi-directional heat insulation in the upward, downward, circumferential and radial directions, which further improves the temperature control effect of the battery box, and improves the stability and constancy of the operating temperature of the battery B. Furthermore, the outer side surface S211 of the circumferential edge of the heat exchange plate 21 is wrapped by the first part 221, the second part 222 and the third part 223 of the heat insulating pad 22, which improves the buffer effect of the circumferential edge of the heat exchange plate 21.
In the fourth embodiment shown in FIG. 9, on the basis of the second embodiment shown in FIG. 7, the heat insulating pad 22 further comprises a third part 223, the third part 223 bends inwardly from the second part 222, extends to below a lower surface L211 of the circumferential edge of the heat exchange plate 21 and further extends into the recessed portion 242 of the protective plate 24, the temperature preserving pad 23 comprises a main body 230 and a protruding portion 231 which is ring-shaped and protrudes upwardly from the main body 230, and the protruding portion 231 and a portion of the third part 223 which is located in the recessed portion 242 of the protective plate 24 abut against each other in the up-down direction D. It is noted that the fourth embodiment shown in FIG. 9 is similar to the third embodiment shown in FIG. 8, but differs in the extension extent of the heat insulating pad 22 and the protruding portion 231 of the temperature preserving pad 23. The protruding portion 231 and the portion of the third part 223 of the heat insulating pad 22 which is located in the recessed portion 242 of the protective plate 24 abut against each other in the up-down direction D, the heat insulating pad 22 and the temperature preserving pad 23 are connected together, so that the first part 221, the second part 222, the third part 223 and the temperature preserving pad 23 together achieve multi-directional heat insulation to the entire heat exchange plate 21 in the upward, downward, circumferential and radial directions (not only achieve the heat insulation from the lower frame body 1 but also from the protective plate 24), and further improve the temperature control effect of the battery box, and improve the stability and constancy of the operating temperature of the battery B.
The temperature preserving pad 23 can be configured in a variety of forms, which are specifically described below.
In the fifth embodiment shown in FIG. 10, the protective plate 24 comprises a peripheral portion 241 which is ring-shaped and a recessed portion 242 which is recessed downwardly from an inner side of the peripheral portion 241; the temperature preserving pad 23 comprises a main body 230 and an extending portion 232, the main body 230 is received in the recessed portion 242, the extending portion 232 extends outwardly from the main body 230 onto an entire lower surface L211 of the circumferential edge of the heat exchange plate 21 so that the extending portion 232 is sandwiched between an upper surface U241 of the peripheral portion 241 of the protective plate 24 and the lower surface L211 of the circumferential edge of the heat exchange plate 21. The fifth embodiment shown in FIG. 10 is similar to the third embodiment shown in FIG. 8, the extending portion 232 can perform temperature preservation from below the lower surface L211 of the circumferential edge of the heat exchange plate 21, so that the extending portion 232 and the first part 221 of the heat insulating pad 22 together realize bidirectional heat insulation in the up-down direction D, which improves the temperature control effect of the battery box, and improves the stability and constancy of the operating temperature of the battery B.
In the sixth embodiment shown in FIG. 11, the protective plate 24 comprises a peripheral portion 241 which is ring-shaped and a recessed portion 242 which recessed downwardly from an inner side of the peripheral portion 241, an outer side surface S241 of the peripheral portion 241 of the protective plate 24 protrudes outwardly with respect to an outer side surface S211 of the circumferential edge of the heat exchange plate 21; the temperature preserving pad 23 comprises a main body 230, an extending portion 232 and a bending portion 233, the main body 230 is received in the recessed portion 242, the extending portion 232 extends outwardly from the main body 230 onto the lower surface L211 of the circumferential edge of the heat exchange plate 21 so that the extending portion 232 is sandwiched between an upper surface U241 of the peripheral portion 241 of the protective plate 24 and the lower surface L211 of the circumferential edge of the heat exchange plate 21, the bending portion 233 bends upwardly from the extending portion 232 and extends to surround the outer side surface S211 of the circumferential edge of the heat exchange plate 21. The sixth embodiment shown in FIG. 11 can achieve an effect similar to that of the third embodiment shown in FIG. 8, that is, the bending portion 233 of the temperature preserving pad 23 insulates heat from outside (i.e., the circumferential direction and the radial direction) the outer side surface S211 of the circumferential edge of the heat exchange plate 21, so that the extending portion 232 and the bending portion 233 of the temperature preserving pad 23 and the first part 221 of the heat insulating pad 22 together realize multi-directional heat insulation in the upward, downward, circumferential and radial directions, thereby further improving the temperature control effect of the battery box, and improving the stability and constancy of the operating temperature of battery B. Furthermore, the sixth embodiment shown in FIG. 11 can also have an effect similar to that of the fourth embodiment shown in FIG. 9, the main body 230, the extending portion 232 and the bending portion 233 (in other words, the entire thermal insulation pad 23) of the temperature preserving pad 23 and the first part 221 of the heat insulating pad 22 together realize multi-directional heat insulation to the entire heat exchange plate 21 in the upward, downward, circumferential and radial directions (realize not only the heat insulation between the heat exchange plate 21 and the lower frame body 1, but also temperature preservation (that is heat insulation) between the heat exchange plate 21 and the protective plate 24), and further improve the temperature control effect of the battery box, improve the stability and constancy of the operating temperature of the battery B. In the seventh embodiment shown in FIG. 12, on the basis of the sixth embodiment shown in FIG. 11, the temperature preserving pad 23 further comprises a folding-back portion 234, the folding-back portion 234 bends inwardly from the bending portion 233 and extends to the upper surface U211 of the circumferential edge of the heat exchange plate 21. The folding-back portion 234 facilitates the fixing of the bending portion 233, while forming the double-layer heat insulation over the upper surface U211 of the circumferential edge of the heat exchange plate 21, thereby reinforcing the heat insulating effect between the heat exchange plate 21 and the lower frame 1 in the upward direction.
A positional relationship of the folding-back portion 234 and the first part 221 of the heat insulating pad 22 may be as shown in FIG. 12, that is, the folding-back portion 234 of the temperature preserving pad 23 is sandwiched between the first part 221 of the heat insulating pad 22 and the upper surface U211 of the circumferential edge of the heat exchange plate 21.
A positional relationship of the folding-back portion 234 and the first part 221 of the heat insulating pad 22 may also be as shown in FIG. 13. In the eighth embodiment shown in FIG. 13, the first part 221 of the heat insulating pad 22 is sandwiched between the folding-back portion 234 of the temperature preserving pad 23 and the upper surface U211 of the circumferential edge of the heat exchange plate 21.
In the ninth embodiment shown in FIG. 14, the fourth embodiment shown in FIG. 9 and the sixth embodiment shown in FIG. 11, the temperature preserving pad 23 and the heat insulating pad 22 are integrally formed. In other words, the temperature preserving pad 23 and the heat insulating pad 22 can be made of the same material, thereby saving manufacturing cost. More specifically, the first part 221 of the heat insulating pad 22 is formed by the folding-back portion 234 of the temperature preserving pad 23, and vice versa, that is, other portions, such as the extending portion 232 and the bending portion 233. In the fourth embodiment shown in FIG. 9 and in the sixth embodiment shown in FIG. 11, the temperature preserving pad 23 and the heat insulating pad 22 are formed separately.
A fixing member 25 is used to fix the heat exchange plate 21, the heat insulating pad 22, the temperature preserving pad 23 and the protective plate 24 to the lower frame body 1. The fixing member 25 can take any suitable form, such as a rivet or a combination of bolt and nut. The material of the fixing member 25 is preferably made of a material having low thermal conductivity, such as a plastic member.
The above detailed description describes various exemplary embodiments, but is not intended to be limited to the specifically disclosed combinations. Therefore, unless otherwise stated, the various features disclosed herein can be combined together to form a plurality of additional combinations that are not shown for the sake of clarity.

Claims (13)

What is claimed is:
1. A battery box, comprising:
a lower frame body closed in a circumferential direction and opened in an up-down direction; and
a heat exchange assembly fixed below the lower frame body at a circumferential edge of the heat exchange assembly, the heat exchange assembly and the lower frame body forming an accommodating space which is opened upwardly and used to accommodate a battery, the heat exchange assembly comprising a heat exchange plate, a heat insulating pad, a temperature preserving pad and a protective plate;
wherein
the heat exchange plate is provided with a flow passage therein for a heat exchange medium to flow, a portion of the heat exchange plate provided with the flow passage is used to support the battery and exchange heat with the battery;
the heat insulating pad comprises a first part, the first part has a ring shape, the first part surrounds an entire circumferential edge of the heat exchange plate outside the flow passage and is provided above an upper surface of the circumferential edge of the heat exchange plate, the first part of the heat insulating pad and the circumferential edge of the heat exchange plate are stacked in the up-down direction, the first part of the heat insulating pad is sandwiched between a lower surface of the lower frame body and the upper surface of the circumferential edge of the heat exchange plate;
at least a portion of the temperature preserving pad is provided below the heat exchange plate, and the temperature preserving pad at least covers the portion of the heat exchange plate in which the flow passage is provided;
the protective plate supports the temperature preserving pad and the heat exchange plate from below.
2. The battery box according to claim 1, wherein
the protective plate comprises a peripheral portion which is ring-shaped and a recessed portion which is recessed downwardly from an inner side of the peripheral portion, the temperature preserving pad is received in the recessed portion;
the first part of the heat insulating pad, the circumferential edge of the heat exchange plate and the peripheral portion of the protective plate are stacked in the up-down direction;
an outer side surface of the first part of the heat insulating pad, an outer side surface of the circumferential edge of the heat exchange plate and an outer side surface of the peripheral portion of the protective plate are flush with each other.
3. The battery box according to claim 1, wherein
the protective plate comprises a peripheral portion which is ring-shaped and a recessed portion which recessed downwardly from an inner side of the peripheral portion, the temperature preserving pad is received in the recessed portion;
an outer side surface of the peripheral portion of the protective plate protrudes outwardly with respect to an outer side surface of the circumferential edge of the heat exchange plate;
the heat insulating pad further comprises a second part, the second part bends downwardly from the first part and extends to surround the outer side surface of the circumferential edge of the heat exchange plate from outside.
4. The battery box according to claim 3, wherein
the heat insulating pad further comprises a third part;
the third part bends inwardly from the second part and extends to below a lower surface of the circumferential edge of the heat exchange plate, the third part is sandwiched by an upper surface of the peripheral portion of the protective plate and the lower surface of the circumferential edge of the heat exchange plate in the up-down direction.
5. The battery box according to claim 3, wherein
the heat insulating pad further comprises a third part, the third part bends inwardly from the second part, extends to below a lower surface of the circumferential edge of the heat exchange plate and further extends into the recessed portion of the protective plate;
the temperature preserving pad comprises a main body and a protruding portion which is ring-shaped and protrudes upwardly from the main body, and the protruding portion and a portion of the third part which is located in the recessed portion of the protective plate abut against each other in the up-down direction.
6. The battery box according to claim 5, wherein
the temperature preserving pad and the heat insulating pad are integrally formed.
7. The battery box according to claim 1, wherein,
the protective plate comprises a peripheral portion which is ring-shaped and a recessed portion which is recessed downwardly from an inner side of the peripheral portion;
the temperature preserving pad comprises a main body and an extending portion, the main body is received in the recessed portion, the extending portion extends outwardly from the main body onto an entire lower surface of the circumferential edge of the heat exchange plate so that the extending portion is sandwiched between an upper surface of the peripheral portion of the protective plate and the lower surface of the circumferential edge of the heat exchange plate.
8. The battery box according to claim 1, wherein
the protective plate comprises a peripheral portion which is ring-shaped and a recessed portion which recessed downwardly from an inner side of the peripheral portion;
an outer side surface of the peripheral portion of the protective plate protrudes outwardly with respect to an outer side surface of the circumferential edge of the heat exchange plate;
the temperature preserving pad comprises a main body, an extending portion and a bending portion, the main body is received in the recessed portion, the extending portion extends outwardly from the main body onto a lower surface of the circumferential edge of the heat exchange plate so that the extending portion is sandwiched between an upper surface of the peripheral portion of the protective plate and the lower surface of the circumferential edge of the heat exchange plate, the bending portion bends upwardly from the extending portion and extends to surround the outer side surface of the circumferential edge of the heat exchange plate.
9. The battery box according to claim 8, wherein
the temperature preserving pad further comprises a folding-back portion, the folding-back portion bends inwardly from the bending portion and extends to the upper surface of the circumferential edge of the heat exchange plate.
10. The battery box according to claim 9, wherein
the folding-back portion of the temperature preserving pad is sandwiched between the first part of the heat insulating pad and the upper surface of the circumferential edge of the heat exchange plate.
11. The battery box according to claim 9, wherein
the first part of the heat insulating pad is sandwiched between the folding-back portion of the temperature preserving pad and the upper surface of the circumferential edge of the heat exchange plate.
12. The battery box according to claim 9, wherein
the temperature preserving pad and the heat insulating pad are integrally formed.
13. The battery box according to claim 8, wherein
the temperature preserving pad and the heat insulating pad are integrally formed.
US16/719,663 2018-12-29 2019-12-18 Battery box Active 2040-09-08 US11258119B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201822246290.4 2018-12-29
CN201822246290.4U CN209401679U (en) 2018-12-29 2018-12-29 Battery case

Publications (2)

Publication Number Publication Date
US20200212523A1 US20200212523A1 (en) 2020-07-02
US11258119B2 true US11258119B2 (en) 2022-02-22

Family

ID=67897061

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/719,663 Active 2040-09-08 US11258119B2 (en) 2018-12-29 2019-12-18 Battery box

Country Status (5)

Country Link
US (1) US11258119B2 (en)
EP (4) EP4246689A3 (en)
CN (1) CN209401679U (en)
HU (1) HUE065047T2 (en)
WO (1) WO2020135155A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3145649A1 (en) * 2023-02-06 2024-08-09 Renault S.A.S Battery module comprising a heat treatment plate and method of assembling said module
US12230826B2 (en) 2022-03-23 2025-02-18 Ford Global Technologies, Llc Methods for assembling traction battery packs
US12275298B2 (en) 2022-03-23 2025-04-15 Ford Global Technologies, Llc Traction battery packs with cell-to-pack battery systems housed within irregularly shaped enclosures
US12374750B2 (en) 2022-03-23 2025-07-29 Ford Global Technologies, Llc Traction battery pack assembling method
US12424695B2 (en) 2022-03-23 2025-09-23 Ford Global Technologies, Llc Retention assemblies for traction battery packs with cell-to-pack battery systems
US12479327B2 (en) 2022-03-23 2025-11-25 Ford Global Technologies, Llc Traction battery pack cell stack removal method and battery pack assembly
US12506215B2 (en) 2022-03-23 2025-12-23 Ford Global Technologies, Llc Enclosure cover attachment configurations for traction battery packs with cell-to-pack battery systems
US12525637B2 (en) 2022-03-23 2026-01-13 Ford Global Technologies, Llc Traction battery pack assembling method

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209401679U (en) 2018-12-29 2019-09-17 宁德时代新能源科技股份有限公司 Battery case
WO2020177606A1 (en) * 2019-03-05 2020-09-10 爱驰汽车有限公司 Battery pack
CN110620197A (en) * 2019-09-24 2019-12-27 北京海纳川汽车部件股份有限公司 Battery box subassembly, end backplate and vehicle
CN116018716B (en) 2021-07-29 2024-01-26 宁德时代新能源科技股份有限公司 Heat exchange member, manufacturing method and manufacturing system thereof, battery and electricity utilization device
CN114430087B (en) * 2022-01-21 2024-03-29 北京博瑞翔伦科技发展有限公司 Battery storage mechanism of edge computing device with waterproof function
CN116826256B (en) * 2023-07-17 2025-01-03 中创新航科技集团股份有限公司 Battery device

Citations (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080193830A1 (en) * 2006-10-13 2008-08-14 Enerdel, Inc. Battery assembly with temperature control device
US20110159340A1 (en) * 2009-12-25 2011-06-30 Industrial Technology Research Institute Protection structure forthermal dissipation and preventing thermal runaway diffusion in battery system
US20110300421A1 (en) * 2010-06-04 2011-12-08 Denso Corporation Electric power source device
CN102347519A (en) * 2010-07-23 2012-02-08 通用汽车环球科技运作有限责任公司 Prismatic battery cell with integrated cooling passages and assembly frame
US20130146249A1 (en) * 2011-12-09 2013-06-13 Honda Motor Co., Ltd. Battery cooling structure
JP2014183013A (en) 2013-03-21 2014-09-29 Sumitomo Electric Ind Ltd Battery pack
US20140322563A1 (en) * 2012-03-29 2014-10-30 Lg Chem, Ltd. Battery system and method for cooling the battery system
CN204348869U (en) 2014-12-18 2015-05-20 北汽福田汽车股份有限公司 Water-cooled assembly and the automobile with it
US20150340746A1 (en) * 2012-02-03 2015-11-26 Renault S.A.S. Battery module provided with a peltier cell
US20160056516A1 (en) * 2014-08-25 2016-02-25 Ford Global Technologies, Llc Traction battery assembly with thermal device
US20160064708A1 (en) * 2014-08-26 2016-03-03 Ford Global Technologies, Llc Angled Battery Cell Configuration for a Traction Battery Assembly
US20160118701A1 (en) * 2014-10-28 2016-04-28 Ford Global Technologies, Llc Support structure for traction battery assembly with integrated thermal plate
CN205211817U (en) 2015-12-09 2016-05-04 北汽福田汽车股份有限公司 Battery wraps box and has its vehicle
US20160133998A1 (en) * 2014-11-11 2016-05-12 Ford Global Technologies, Llc Magnetically Controlled Traction Battery Thermal Plate
US20160141737A1 (en) * 2013-06-06 2016-05-19 Hitachi Automotive Systems, Ltd. Electricity storage block and electricity storage module
US20160308262A1 (en) * 2015-04-15 2016-10-20 Ford Global Technologies, Llc Peristaltic Pump for Traction Battery Thermal Management System
US9533600B1 (en) * 2015-09-03 2017-01-03 GM Global Technology Operations LLC Structurally integrated propulsion battery
CN207021300U (en) 2017-05-11 2018-02-16 东莞市迈泰热传科技有限公司 Case for battery pack of electric vehicle
CN207183375U (en) 2017-09-20 2018-04-03 宁德时代新能源科技股份有限公司 Case and battery pack
US20180123192A1 (en) * 2016-10-28 2018-05-03 Inevit, Llc Electrically insulating battery cells in a battery module from an integrated cooling plate
US20180131051A1 (en) * 2016-11-04 2018-05-10 Ford Global Technologies, Llc Thermal exchange plate assembly for vehicle battery
US20180212222A1 (en) * 2017-01-20 2018-07-26 Tesla Motors, Inc. Energy storage system
CN207676971U (en) 2017-12-27 2018-07-31 宁德时代新能源科技股份有限公司 battery pack
CN108365156A (en) 2018-04-24 2018-08-03 北京新能源汽车股份有限公司 Battery pack and vehicle
CN207818674U (en) 2017-12-27 2018-09-04 宁德时代新能源科技股份有限公司 battery pack
US20180287227A1 (en) * 2017-03-30 2018-10-04 Lg Electronics Inc. Battery pack for vehicle, and vehicle
CN209401679U (en) 2018-12-29 2019-09-17 宁德时代新能源科技股份有限公司 Battery case
US20190379094A1 (en) * 2018-06-08 2019-12-12 Hyundai Motor Company Battery-cooling device for vehicle and manufacturing method of same
US20200091479A1 (en) * 2018-09-13 2020-03-19 Tiveni MergeCo Inc. Battery module with bottom plate that functions as a heat spreader

Patent Citations (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080193830A1 (en) * 2006-10-13 2008-08-14 Enerdel, Inc. Battery assembly with temperature control device
US20110159340A1 (en) * 2009-12-25 2011-06-30 Industrial Technology Research Institute Protection structure forthermal dissipation and preventing thermal runaway diffusion in battery system
US20110300421A1 (en) * 2010-06-04 2011-12-08 Denso Corporation Electric power source device
CN102347519A (en) * 2010-07-23 2012-02-08 通用汽车环球科技运作有限责任公司 Prismatic battery cell with integrated cooling passages and assembly frame
US20130146249A1 (en) * 2011-12-09 2013-06-13 Honda Motor Co., Ltd. Battery cooling structure
US20150340746A1 (en) * 2012-02-03 2015-11-26 Renault S.A.S. Battery module provided with a peltier cell
US20140322563A1 (en) * 2012-03-29 2014-10-30 Lg Chem, Ltd. Battery system and method for cooling the battery system
JP2014183013A (en) 2013-03-21 2014-09-29 Sumitomo Electric Ind Ltd Battery pack
US20160141737A1 (en) * 2013-06-06 2016-05-19 Hitachi Automotive Systems, Ltd. Electricity storage block and electricity storage module
US20160056516A1 (en) * 2014-08-25 2016-02-25 Ford Global Technologies, Llc Traction battery assembly with thermal device
US20160064708A1 (en) * 2014-08-26 2016-03-03 Ford Global Technologies, Llc Angled Battery Cell Configuration for a Traction Battery Assembly
US20160118701A1 (en) * 2014-10-28 2016-04-28 Ford Global Technologies, Llc Support structure for traction battery assembly with integrated thermal plate
US20160133998A1 (en) * 2014-11-11 2016-05-12 Ford Global Technologies, Llc Magnetically Controlled Traction Battery Thermal Plate
CN204348869U (en) 2014-12-18 2015-05-20 北汽福田汽车股份有限公司 Water-cooled assembly and the automobile with it
US20160308262A1 (en) * 2015-04-15 2016-10-20 Ford Global Technologies, Llc Peristaltic Pump for Traction Battery Thermal Management System
US9533600B1 (en) * 2015-09-03 2017-01-03 GM Global Technology Operations LLC Structurally integrated propulsion battery
CN205211817U (en) 2015-12-09 2016-05-04 北汽福田汽车股份有限公司 Battery wraps box and has its vehicle
US20180123192A1 (en) * 2016-10-28 2018-05-03 Inevit, Llc Electrically insulating battery cells in a battery module from an integrated cooling plate
US20180131051A1 (en) * 2016-11-04 2018-05-10 Ford Global Technologies, Llc Thermal exchange plate assembly for vehicle battery
US20180212222A1 (en) * 2017-01-20 2018-07-26 Tesla Motors, Inc. Energy storage system
US20180287227A1 (en) * 2017-03-30 2018-10-04 Lg Electronics Inc. Battery pack for vehicle, and vehicle
CN207021300U (en) 2017-05-11 2018-02-16 东莞市迈泰热传科技有限公司 Case for battery pack of electric vehicle
CN207183375U (en) 2017-09-20 2018-04-03 宁德时代新能源科技股份有限公司 Case and battery pack
CN207676971U (en) 2017-12-27 2018-07-31 宁德时代新能源科技股份有限公司 battery pack
CN207818674U (en) 2017-12-27 2018-09-04 宁德时代新能源科技股份有限公司 battery pack
CN108365156A (en) 2018-04-24 2018-08-03 北京新能源汽车股份有限公司 Battery pack and vehicle
US20190379094A1 (en) * 2018-06-08 2019-12-12 Hyundai Motor Company Battery-cooling device for vehicle and manufacturing method of same
US20200091479A1 (en) * 2018-09-13 2020-03-19 Tiveni MergeCo Inc. Battery module with bottom plate that functions as a heat spreader
CN209401679U (en) 2018-12-29 2019-09-17 宁德时代新能源科技股份有限公司 Battery case
US20200212523A1 (en) * 2018-12-29 2020-07-02 Contemporary Amperex Technology Co., Limited Battery box

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Contemporary Amperex Technology Co., Limited, Extended European Search Report, EP19216900.1, dated May 29, 2020, 6 pgs.
Contemporary Amperex Technology Co., Limited, International Search Report and Written Opinion, PCT/CN2019/125998, dated Mar. 18, 2020, 13 pgs.

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12230826B2 (en) 2022-03-23 2025-02-18 Ford Global Technologies, Llc Methods for assembling traction battery packs
US12275298B2 (en) 2022-03-23 2025-04-15 Ford Global Technologies, Llc Traction battery packs with cell-to-pack battery systems housed within irregularly shaped enclosures
US12374750B2 (en) 2022-03-23 2025-07-29 Ford Global Technologies, Llc Traction battery pack assembling method
US12424695B2 (en) 2022-03-23 2025-09-23 Ford Global Technologies, Llc Retention assemblies for traction battery packs with cell-to-pack battery systems
US12479327B2 (en) 2022-03-23 2025-11-25 Ford Global Technologies, Llc Traction battery pack cell stack removal method and battery pack assembly
US12506215B2 (en) 2022-03-23 2025-12-23 Ford Global Technologies, Llc Enclosure cover attachment configurations for traction battery packs with cell-to-pack battery systems
US12525637B2 (en) 2022-03-23 2026-01-13 Ford Global Technologies, Llc Traction battery pack assembling method
FR3145649A1 (en) * 2023-02-06 2024-08-09 Renault S.A.S Battery module comprising a heat treatment plate and method of assembling said module

Also Published As

Publication number Publication date
EP3675221B1 (en) 2023-11-15
EP4246689A2 (en) 2023-09-20
WO2020135155A1 (en) 2020-07-02
EP3675221A1 (en) 2020-07-01
HUE065047T2 (en) 2024-04-28
CN209401679U (en) 2019-09-17
EP4246687A2 (en) 2023-09-20
EP4246688A2 (en) 2023-09-20
EP4246689A3 (en) 2025-04-09
EP4246688A3 (en) 2025-04-09
EP4246687A3 (en) 2025-04-09
US20200212523A1 (en) 2020-07-02

Similar Documents

Publication Publication Date Title
US11258119B2 (en) Battery box
EP3675207B1 (en) Battery box
US12283674B2 (en) Battery box
US20110262782A1 (en) Battery explosion-proof structure and power battery having the same
US10128472B2 (en) Secondary battery head cover assembly, secondary battery including the same and assembling method thereof
CN215911486U (en) Top cover of battery and battery
KR20100065669A (en) Rechargeable battery and battery module using thereof
US20150311481A1 (en) Cap Assembly Of Power Battery
US20240405331A1 (en) Polished aluminum sheet for lithium battery, top cover, and lithium battery
US20140205872A1 (en) Rechargeable battery having desirable safety performance
CN107170918A (en) A kind of lithium ion power battery explosion protection cover and its manufacture method
CN113675510A (en) End connection structure of battery cell, battery cell and power battery
JP6392954B2 (en) Curved battery cell storage tray
CN207250598U (en) Battery tray
CN222953221U (en) Lithium battery cover assembly
CN220821855U (en) Battery top cap and battery
CN220984660U (en) Battery cover plate structure and single battery
US10700314B2 (en) Secondary battery head cover assembly, secondary battery including the same and assembling method thereof
CN109148767A (en) A kind of polymer battery core and polymer battery packet
CN103812023A (en) Top plate structure of low-voltage power distribution cabinet
JP2011181346A (en) Battery case
CN221226403U (en) Housing for energy storage battery and energy storage battery
CN210881837U (en) Multifunctional combined wrapping edge for refrigerator car carriage
US20190058169A1 (en) Secondary battery head cover assembly, secondary battery including the same and assembling method thereof
CN105792624B (en) A kind of car heat dissipating double-fuselage

Legal Events

Date Code Title Description
FEPP Fee payment procedure

Free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

AS Assignment

Owner name: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WANG, HENG;JI, JINQING;ZHANG, WENHUI;AND OTHERS;REEL/FRAME:051332/0511

Effective date: 20191021

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NOTICE OF ALLOWANCE MAILED -- APPLICATION RECEIVED IN OFFICE OF PUBLICATIONS

STCF Information on status: patent grant

Free format text: PATENTED CASE

AS Assignment

Owner name: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED;REEL/FRAME:068338/0723

Effective date: 20240806

Owner name: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, CHINA

Free format text: ASSIGNMENT OF ASSIGNOR'S INTEREST;ASSIGNOR:CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED;REEL/FRAME:068338/0723

Effective date: 20240806

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 4